Had to Return Item! The frequency response is, to my very experienced ears, as close to neutral as a sub-£100 headphones can be. Ive purchased this mouse mat specifically as I was hoping the enforced edges will prevent the mat from deforming. (Connecting was simple as most bluetooth devices are. Einmal auf der Terrasse in der Sonne stehen lassen und die Crocs haben sich so verformt, dass sie nicht mehr passen. I wore yesterday to run errands and a teenager complimented me on the shoes! The treble response is uniformly elevated in line with the prominent upper midrange. 5?9, 120 lbs and I don?t want to my underwear showing. The plastic feels as though it will shatter under just a few pounds of pressure. I suspect that I would have been happier with these headphones had I owned them before I owned a more expensive set.